what are the types in Relay?

1 Answers   PLA,

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how calculation to be done of cable size/o.h. conductor size of 11kv h.t.for the load of 2175 kw

1 Answers   Shell,

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In a house wiring why we are using only one neutral wire and so many phase wires from the main board, when the load is common for both wires?

3 Answers  

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Active power= VI COS FI But incase of leading power factor ( more than unity), may we use other formula ? because the cos fi (value of cos thita) should not be grater than one.

2 Answers  

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Can you any one explain different between instantaneous over current and IDMT

1 Answers  

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How can you limit the fault level in a power system?

1 Answers   Alfanar,

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I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF

0 Answers  

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during installation time of transformer and alternator which points we have to observed?

0 Answers  

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wish of these transformer uses oil?

0 Answers   FJ International,

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Why different values of B’s (magnetic flux density) are chosen for DC machines and Induction Motors?

1 Answers  

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1 Answers  

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What is the 415V AC Soft starter? Explain with an example?

1 Answers   TCS,

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